June 2026
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Largest Quantum Computing Public Companies in the US
Benchmark revenue and EBITDA valuation multiples for public comps like
IonQ, Littelfuse, D-Wave Quantum, Rigetti and QuantumScape.
 | IonQ Inc sells access to several quantum computers of various qubit capacities and is in the process of researching and developing technologies for quantum computers with increasing computational capabilities. The company currently makes access to its quantum computers available via cloud platforms and also to select customers via its own cloud service. This cloud-based approach enables the broad availability of quantum-computing-as-a-service (QCaaS). The company derives its revenue from its quantum-computing-as-a-service arrangements, consulting services related to co-developing algorithms on company's quantum computing systems and contracts associated with the design, development, and construction of specialized quantum computing systems together with related services. | $66 | +53% | $25B | $23B | 173.1x | (120.5x) | ||
| Littelfuse is a primary provider of circuit protection products (such as fuses and relays) for the transportation, industrial, telecommunications, and consumer electronics end markets. The company is also increasing its power semiconductor business, where it predominantly serves industrial end markets, and is breaking into electric vehicle charging infrastructure. Littelfuse has 17,000 global employees. | $480 | +112% | $12B | $12B | 5.2x | 24.8x | ||
| D-Wave Quantum Inc is in the development and delivery of quantum computing systems, software, and services, and it is the commercial supplier of quantum computers and the only company building both annealing quantum computers and gate-model quantum computers. It delivers customer value with practical quantum applications for problems as diverse as logistics, artificial intelligence, materials sciences, drug discovery, scheduling, cybersecurity, fault detection, and financial modeling. Its annealing quantum computers are accessible through the company’s LeapTM cloud service. | $28 | +89% | $10B | $10B | 394.4x | (135.3x) | ||
| Rigetti Computing Inc is engaged in the business of full-stack quantum computing. The company offers full-stack quantum computing platform as a cloud service to a wide range of end-users, directly through its Rigetti QCS platform, and also through cloud service providers. Its proprietary quantum-classical infrastructure provides ultra-low latency integration with public and private clouds for high-performance practical quantum computing. The company has developed the industry's first multi-chip quantum processor for scalable quantum computing systems. Geographically, the company derives the majority of its revenue from the United States. | $24 | +104% | $8B | $8B | 1075.0x | (120.6x) | ||
| QuantumScape Corporation is an American company that researches and develops solid-state rechargeable lithium metal batteries for use in electric cars. It was founded in 2010 and is headquartered in San Jose, California, employs around 850 people. Major investors include Volkswagen Group and Bill Gates. | $9 | -- | $6B | $5B | - | (18.8x) | ||
| Infleqtion Inc develops and commercializes neutral atom-based quantum technology products through an integrated platform. Its offerings include quantum sensing, quantum computing, and related software solutions. The company's technologies are deployed across sectors such as defense and security, artificial intelligence, energy optimization, space applications, materials research, and cybersecurity. Its platform integrates core quantum technologies with hardware and proprietary software based on neutral atom systems. | $17 | -- | $4B | $3B | 113.0x | (88.5x) | ||
| Quantum Computing Inc is an integrated photonics and quantum optics technology company that provides accessible and affordable quantum machines to the world today. Its products are designed to operate at room temperature and low power at an affordable cost. The Company’s portfolio of core technologies and products offer capabilities in the areas of high-performance computing, artificial intelligence, and cybersecurity, as well as remote sensing applications. | $11 | -42% | $3B | $2B | 2260.0x | (112.8x) | ||
| Quantum-Si Inc is a life sciences company focused on the development and commercialization of proteomics research tools. The company has designed and developed a hardware, consumable, and software solution to provide a solution for protein detection and analysis. It has developed a proprietary universal single-molecule detection platform that enables Next-Generation Protein Sequencing (NGPS), the ability to sequence proteins. | $1 | -36% | $274M | $151M | 61.9x | (1.9x) | ||
| Quantum Corp is a United States-based company that delivers end-to-end data management solutions designed for unstructured data in the era of artificial intelligence (AI). It provides one of the comprehensive and cost-efficient solutions for the entire data lifecycle. The group provides solutions for video, images, audio, and other large files because this unstructured data represents. Its portfolio of products includes primary storage software and systems, secondary storage software and systems, as well as devices and media. The group operates in three geographic regions: Americas, Europe, the Middle East, and Africa (EMEA), and Asia Pacific (APAC). | $16 | +58% | $231M | $355M | 1.3x | (37.2x) | ||
| Median | $17 | +58% | $6B | $5B | 143.1x | (88.5x) |
Financial data powered by FactSet and Morningstar. Valuation multiples as of current fiscal year. For more data, start your free trial here.
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